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10. A population-based case-control study of risk factors for neural tube defects in four high-prevalence areas of Shanxi province, China. Li Z, Ren A, Zhang L, Guo Z, Li Z. Paediatr Perinat Epidemiol; 2006 Jan; 20(1):43-53. PubMed ID: 16420340 [Abstract] [Full Text] [Related]